Sensory Integration

Sensory integration is an approach used mainly by occupational therapists to help children, and sometimes adults, who find everyday sensations hard to manage. Touch, movement, balance, sound, and light may feel too intense, too faint, or confusing, which can affect play, dressing, eating, learning, and getting along with others. Therapists observe how a person responds and then offer carefully chosen sensory and movement activities that aim to build skills for taking part in daily life.

The best known form is Ayres Sensory Integration, which follows principles set out by the therapist A. Jean Ayres. Sessions look like play in a specially equipped room with swings, climbing equipment, textured materials, and balance challenges. The child leads much of the activity, and the therapist adjusts the challenge so it is neither overwhelming nor dull. Related sensory-based tools, such as weighted items, brushing, or quiet sensory rooms, are sometimes grouped under the same name, though they are not the same intervention. Wider sensory-based approaches, using touch, smell, taste, and sound, are used by some people who say they may support well-being, though research on these is limited and they are separate from Ayres Sensory Integration.

Research is mixed. Systematic reviews of Ayres Sensory Integration in autistic children report gains in individually set goals, but a recent systematic review judged the evidence limited because many studies were small and biased and results in the best-designed studies were inconsistent. Sensory difficulties are real and common in autism, yet sensory processing disorder is not a separate diagnosis. This approach complements, and does not replace, a full assessment.

Sensory integration grew from the work of A. Jean Ayres (1920 to 1988), an American occupational therapist who also held a doctorate in educational psychology. Working as a therapist and researcher, she studied how children with learning and developmental difficulties respond to touch, movement, and body position, and in the early 1970s she set out her theory of sensory integration in the book Sensory Integration and Learning Disorders. She developed assessments, first published as the Southern California Sensory Integration Tests in 1975 and later revised as the Sensory Integration and Praxis Tests in 1989, and she developed a style of therapy that uses guided play. Ayres died on December 16, 1988.

After her death, occupational therapists continued to develop the approach. Researchers wrote down its core principles in a fidelity measure so that studies could test whether a therapist was actually delivering Ayres Sensory Integration, and trials began to appear, most involving autistic children. In 2012 the American Academy of Pediatrics advised that evidence for sensory integration therapies was limited and that sensory processing disorder generally should not be diagnosed, because sensory difficulties overlap with autism, attention difficulties, and other conditions. Today the approach is practiced by licensed occupational therapists with additional training, and the term is also used loosely for sensory-based tools that Ayres did not describe.